Jerry's friends are aggressive towards other students, and they frequently disrupt classes with their behaviors. a recent study indicates that jerry's choice of friends is linked to

A recent study indicates that Jerry's choice of friends is linked to a lower likelihood of graduating from high school.

Given the choice of his friends, Jerry is unlikely to easily graduate from high school, if he ever does that. Assuming he behaves in the same manner as his disruptive friends, his chances of graduating are really low. If he wants to do that, maybe he should find new friends who support him.